1 x 63, 3 x 21, 7 x 9
255
79
no if you multiply two primes for example 7x9=63 63 is not prime because 9 and 7 go into it
1 and 189 3 and 63 7 and 27 9 and 21
7x9=63
47
1827
3 x 63 = 189 3 + 63 = 66
1 x 63, 3 x 21, 7 x 9
79
255
1 x 63, 3 x 21, 7 x 9
63 and 65 are the number
63
47
no if you multiply two primes for example 7x9=63 63 is not prime because 9 and 7 go into it